Launching Next has discovered 3 google map startups.
HelpYea
HelpYea - Real life help app
Google Maps
Find local businesses, view maps and get driving directions in Google Maps
ThinkQuest : Library
The ThinkQuest Library provides innovative learning resources for students of all ages on a wide range of educational topics. Featuring over 8,000 websites created by students for students, the ThinkQuest Library is visited by over 30 million web learners each year.